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Monday, 25 November 2013

Working of Cylindrical Grinding Machine

Working of Cylindrical Grinding MachinePoints : Working of Cylindrical Grinding Machine, The cylindrical grinder is designed to give three movements which are very important.
These three movements are:
1. Rotating the work-piece on its axis.
2. Moving the work horizontally back and forth in front of the grinding wheel (traverse
movement).
3. Moving the wheel into the work-piece and away (in-feed).

In this type of machine, two methods are mostly used for holding the work. One is to
clamp the work in a rotating chuck; the other is to rotate the work between center
points. In either case, the rotating work is reciprocated (traversed) across the face of a
comparatively narrow abrasive wheel. After each table traverse, the wheel moves
toward the work a distance equal to the depth of metal to be removed. Crossways
under the wheel head provide for feeding the wheel a few ten-thousandth of an inch
toward the work after each traverse of the worktable. The worktable is driven, by an
electric motor mounted with the head on the reciprocating worktable. A similar self
contained motor drives the grinding wheel.Note:The following special types of cylindrical grinders are also used for different
nature of work.
1. Roll Grinders 2. Piston Grinders 3. Plunge-cut Grinders
(i) Ordinary plunge-cut grinders (ii) Crankpin grinders
(iii) Piston grinders (plunge-cut types) (iv) Cam-shaft grinder
4. Form Grinders
(i) Thread Grinders (ii) Gear Grinders